Lock-casing.



, No. 868,210. PATENTED OCT; 15, 1907*.

L. H. MULLIKIN.

LOOK CASING. APPLICATION rum NOV. 27, 1906. RENEw sn JULY as, 1901.

UNITED STATES PATENT OFFICE.

LEVIN H. MULLIKIN, OF TRAPPE, MARYLAND, ASSIGNOR TO P. &. F. CORBIN ANDRUSSELL & ERWIN MANUFACTURING COMPANY, BOTH OF NE BRITAIN,

PORATIONS OF CONNECTICUT.

CONNECTICUT, COR- LOCK-CASING.

Patented Oct. 15, 1907.

Appl d 5.121 filed November 27', 1906, Serial No. 345.330. Renewed July23,1907. $erial No. 385,139.

the following is a description, reference being had to the accompanyingdrawing, and to the letters and figures of reference marked thereon.

My'invention relates to that class of lock cases which are provided withface plates adjustable relatively for different thicknesses of doors.

The object of the invention is to provide one or more filling piecesbetween the front plate of the lock and the adjacent side of theadjustable face plate so as to adapt the same for different thicknessesof doors.

This object I accomplish by the mechanism shown in the accompanyingdrawing, in which Figure l is a perspective of a lock case containing myimprovement; Fig. 2 is a horizontal section; Fig. 3 is a perspectiveview with the filling pieces removed; Fig.

, 4 is a perspective of three filling pieces of different widths.

A designates a lock case adapted to be set into a recess cut through theedge of a door with its front plate a flush with the edge of the door.One side of the case is formed with a face plate A and its opposite sideis formed with a vertical tongue a set just back of the front face ofthe front plate a. The inner side of the other face plate A is formednear its front edge with a vertical groove a adapted to receive thetongue a when the lock is applied to the door of the least thickness onwhich it is adapted to be used as shown in Fig. 3.

To adapt the casing for doors of different thicknesses 1 provide thefilling pieces B, preferably three in numher though the number isimmaterial. These pieces B, vary in width and fill out the space betweenthe side of the lock case and the face plate A". The filling piece B isin the form of an angle plate with its inner flange I), provided with aslot 1), through which is passed a screw b which secures it to the lockcase. The outer vertical edge of the front flange of the filling pieceis provided with a tongue b which fits into the groove a in the faceplate A as shown in Figs. 1 and 2. The inner side of the filling piece Bis provided with a vertical groove b which receives the tongue 0. on thelock casing and when the screw 1) is in place there is no chance for anyshifting of the filling piece on the lock case, due to shrinkage of thedoor, shocks &c. The lock casing is thus adapted for stock doors ofdifferent thicknesses by simply attaching the proper size of fillingpiece B, which is a very simple way of accomplishing this desirableresult.

What I claim is 1. A lock case or frame, provided at one side with anadjustable face plate and a filling piece secured removably to one sideof the case fiush with its front plate and against which the adjacentside of the said adjustable face plate bears; whereby said filling piecemay be removed and another of a different width applied.

2. A lock case or frame, provided at one side with an adjustable faceplate, a filling piece secured removably to one side of the case fiushwith its front plate, and tongue and groove connections between theedges of the filling piece and the casing and face plate.

3. A lock casing having relatively adjustable face plates and aplurality of filling pieces of different widths adapted to beindividually secured between the side of the lock case proper and theadjustable face plate flush with the front plate of the case to adaptthe lock casing to doors of different thicknesses.

4. A lock case or frame provided at one side with a removable filling;piece forming an extension of its front plate, a screw securing thefilling piece to the casing, and a tongue and groove connection betweensaid filling piece and casing.

5. A lock casing or frame, having a vertical tongue on its side just inrear of the front plate, an adjustable side plate having a groove in itsinner face adapted to receive said tongue and a filling piece to form anextension of said front plate and having a groove to receive said tongueand a tongue to enter said face plate groove, where by when the filling;piece is removed the side of the face plate may be adjusted up flushwith the adjacent side of the lock case or frame.

In testimony whereof I afiix my signature, in presence of two witnesses.

LEVIN H. MULLIKIN.

Witnesses A. M. PARKINS, GEO. H. Evans.

